A long time ago (before I have left RCC) a priest had addressed my doubts about the reality of presence of Christ in Host with the "numerous examples of Eucharistic miracles". The miracles had been:
five globules of dried blood found in the Host from time to time, which all five weight as much as any one of them
I have recently read a book about such miracles and it seems he has been referring to the miracle of Lanciano, where:
each individual globule weighed the same as the other individual ones (although different in size) or as all five together or as any other combination
The feature has been reported twice: just after the miracle and in 1574. No further reports of the feature are known despite further testing of the globules.
All sources I have read so far are vague about the method used for weighting the globules. The most they say is:
The archbishop sent a scale for the weighing of the globules
As there is a comparison of one to all five I guess they were not weighted simultaneously on opposite arms of the scale. Rather there were weights used (it seems spring scales were unknown at the time).
This leads me to serious doubts about reliability of that feature - and thus of the whole miracle.
Are there any sources describing the weighting procedure?